A Syria Democratic Forces (SDF) fighter points towards blue sheets spread over streets as a cover from snipers as he walks on the rubble of damaged buildings in Manbij, in Aleppo Governorate, Syria, August 7, 2016. REUTERS/Rodi Said

A Syria Democratic Forces (SDF) fighter points towards blue sheets spread over streets as a cover from snipers as he walks on the rubble of damaged buildings in Manbij, in Aleppo Governorate, Syria, August 7, 2016. REUTERS/Rodi Said

A Syria Democratic Forces (SDF) fighter points towards blue sheets spread over streets as a cover from snipers as he walks on the rubble of damaged buildings in Manbij, in Aleppo Governorate, Syria, August 7, 2016. REUTERS/Rodi Said

A Syria Democratic Forces (SDF) fighter points towards blue sheets spread over streets as a cover from snipers as he walks on the rubble of damaged buildings in Manbij, in Aleppo Governorate, Syria, August 7, 2016. REUTERS/Rodi Said